Here’s some insight into J. K. Rowling’s perspective on tyranny, in the words of Albus Dumbledore, speaking of the arch-villain of the series:

Voldemort himself created his worst enemy, just as tyrants everywhere do! Have you any idea how much tyrants fear the people they oppress? All of them realize that, one day, amongst their many vicitms, there is sure to be one who rises against them and strikes back! Voldemort is no different! Always he was on the lookout for the one who would challenge him. He heard the prophecy and he leapt into action… (Harry Potter and the Half-Blood Prince, p. 510).

Rowling’s work is worth paying attention to, if not for its insight and its own merits (which there certainly are), then at least for its importance as an influence on popular views of life, liberty, and love.